ksmbd: fix

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

Author: namjaejeon

smb2pdu.c

@@ -4560,7 +4560,7 @@ int smb2_query_dir(struct ksmbd_work *work)
 	int rc = 0;
 	char *srch_ptr = NULL;
 	unsigned char srch_flag;
-	int buffer_sz;
+	int buffer_sz, prev_num_scan = 0;
 	struct smb2_query_dir_private query_dir_private = {NULL, };
 
 	ksmbd_debug(SMB, "Received smb2 query directory request\n");
@@ -4670,9 +4670,12 @@ int smb2_query_dir(struct ksmbd_work *work)
 	 * the end of the directory and no file is matched with the search
 	 * pattern.
 	 */
-	if (rc >= 0 && !d_info.num_entry && d_info.num_scan &&
-	    d_info.out_buf_len > 0)
+	if (rc >= 0 && !d_info.num_entry &&
+	    (d_info.num_scan && d_info.num_scan != prev_num_scan) &&
+	    d_info.out_buf_len > 0) {
+		prev_num_scan = d_info.num_scan;
 		goto again;
+	}
 	/*
 	 * req->OutputBufferLength is too small to contain even one entry.
 	 * In this case, it immediately returns OutputBufferLength 0 to client.